html {
	font-size: 100px;
}


body {
	font-family: "microsoft yahei";
}

li {
	list-style: none;
}

/* nav bar start */

.navbar {
	margin: 0;
	width: 100%;
	height: 50px;
	background: #222222;
}

.navbar-header .navbar-menu-btn {
	margin-top: 8px;
	margin-bottom: 8px;
	margin-right: 15px;
	color: white;
	font-size: 24px;
	background-color: transparent;
	background-image: none;
	border: 1px solid transparent;
	outline: 0;
	display: none;
}

.navbar-header .navbar-menu-btn:hover {
	background-color: #080808;
}

.navbar-brand {
	padding-top: 7px;
	padding-right: 18px;
}

.navbar-collapse {
	background: #222222;
}

.nav>li>a {
	color: #9d9d9d;
	background: #222222;
}

.nav>li>a:focus,
.nav>li>a:hover {
	color: white;
	background: #080808;
}

.nav .open>a, .nav .open>a:focus, .nav .open>a:hover {
	color: white;
	background: #080808;
}

.nav .dropdown-menu, .nav .dropdown-menu li a {
	color: #9d9d9d;
	background: #222222;
}
.nav .dropdown-menu li a:hover {
	color: white;
	background: #080808;
}

/* nav bar end */

/* blank start */

.blank {
	height: 50px;
}

/* blank end */

/* footer start */

footer {
	padding-top: .36rem;
	padding-bottom: .26rem;
	background: #3b3b3b;
	color: #a1a3ab;
}

footer .contact {
	width: 100%;
	float: left;
}

footer .contact ul {
	padding: 0;
}

footer .contact li {
	width: 70px;
	height: 25px;
	line-height: 25px;
	text-align: left;
	float: left;
}

footer .contact li a {
	color: #a1a3ab;
	text-decoration: none;
}

footer .contact li a:hover {
	color: white;
}

footer .copyright {
	width: 100%;
	float: left;
	font-size: 12px;
}

/* footer end */

/* media query */

@media (min-width: 1200px) {
	.container {
		width: 1000px;
	}
}

@media (min-width: 768px) and (max-width: 992px) {
	html {
		font-size: 80px;
	}
	.nav>li>a {
		padding-left: 8px;
		padding-right: 8px;
	}
}
@media (max-width: 767px) {
	html {
		font-size: 60px;
	}
	.navbar-brand {
		margin-left: 15px;
	}
	.navbar-header .navbar-menu-btn {
		display: inline-block;
	}
	/*.intro .bg-img, .advantage .bg-img {
		display: none;
	}
	.intro h2, .advantage h2, .prod h2 {
		font-size: 36px;
	}
	.intro h2 small {
		font-size: 24px;
	}*/
}

@media (max-width: 320px) {
	html {
		font-size: 50px;
	}
	/*.intro, .advantage, .prod {
		padding-top: 0px;
		padding-bottom: 0px;
	}
	.intro h2, .advantage h2, .prod h2 {
		text-align: center;
		font-size: 24px;
	}
	.intro h2 small {
		font-size: 16px;
	}*/
}